Anatomy of a range contraction: Flow-phenology mismatches threaten salmonid fishes near their trailing edge.

ABSTRACT: Climate change is redistributing life on Earth, with profound impacts for ecosystems and human well-being. While repeat surveys separated by multidecadal intervals can determine whether observed shifts are in the expected direction (e.g., poleward or upslope due to climate change), they do not reveal their mechanisms or time scales: whether they were gradual responses to environmental trends or punctuated responses to disturbance events. Here, we document population reductions and temporary range contractions at multiple sites resulting from drought for three Pacific salmonids at their ranges' trailing edge. During California's 2012 to 2016 historic multiyear drought, the 2013 to 2014 winter stood apart because rainfall was both reduced and delayed. Extremely low river flows during the bre

SUBMITTER: Carlson SM 

PROVIDER: S-EPMC12002297 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature